How Do You Know If You Have an Ant Infestation in Cambridge?
A few ants on a worktop is not an infestation. A trail is. Here is how to tell the difference, and what each sign is actually telling you.
Read the guide →What Works
How to Get Rid of Ants in Your Cambridge Home
The honest version: you cannot solve this by killing the ants you can see, and most of what is sold for the job makes it harder rather than easier.
Nearly everyone works through the same sequence: spray the ants, watch them come back, spray again, try a powder, try a home remedy, then ring somebody. It is worth understanding why that sequence fails, because the reason explains what does work.
Why Killing the Ants You Can See Does Nothing
A colony is a queen, a large brood, and a worker force. The ants in your kitchen are foragers — a small, entirely replaceable fraction of the whole thing.
Kill them and the colony loses nothing that matters. The queen keeps laying, the brood keeps developing, and replacement foragers are back on the same route within days. You can repeat this all summer.
Anything that only kills foragers is a way of spending money on the appearance of progress.
What Actually Reaches the Colony
The professional approach uses the ants' own behaviour rather than fighting it.
A material the workers accept as food is placed on the active trail. They feed, carry it home, and distribute it through the colony by trophallaxis — mouth-to-mouth food sharing between ants. That is how it reaches the brood and the queen, neither of which anybody can get to directly.
Which produces the one instruction that feels completely wrong. Leave the trail alone. Do not wipe it, do not spray it, do not clear the food they are working on. The ants have to keep foraging for the treatment to be carried back. A tidy worktop during treatment is a treatment that has not been delivered.
Once activity has stopped, clean thoroughly — that is the moment wiping the routes down with detergent genuinely helps, because it removes trails that are no longer wanted.
What Does Not Work, and Why
| What people try | What it actually does |
|---|---|
| Aerosol sprays | Kills foragers on contact. Colony unaffected. Leaves a repellent residue that can stop a later bait being taken |
| Ant powders | Same, plus it is often placed where ants are seen rather than where they travel |
| Boiling water on a nest | Kills near the surface only; washes sand out of paving joints |
| Vinegar, lemon, chalk, cinnamon | Temporarily disrupts a pheromone trail. The colony reroutes within a day |
| Sealing the gap they use | Useful — but after treatment, not before. Beforehand it just moves them to another route |
| Waiting for autumn | Activity does drop. The colony survives and is larger next year |
What You Can Usefully Do
Before we come
- Find the food source. Toaster crumb tray, under the units, behind the kettle, pet bowl, recycling, the bin itself rather than what is in it
- Follow the trail and note where it leaves the room
- Look outside at that point for soil, sand or heavy activity
- Tell us if you have already sprayed — it changes where we place the treatment
During treatment
- Leave the trails alone
- Do not spray anything
- Expect to keep seeing ants for a few days — that is the process working
Afterwards
- Clean the routes down with detergent
- Seal the gap they were using — usually a threshold, an airbrick or a pipe entry near ground level
- Store sugar, honey and syrup sealed rather than in a folded packet
- Keep borders, bark and dense planting back from the brickwork
- Watch the paving against the house next spring for fresh sand
The One Case Where DIY Makes It Much Worse
If the ants are small, pale and active indoors in the middle of winter, stop and do not spray them.
That description fits the pharaoh ant, a tropical species that in the UK lives only in heated buildings. BPCA is explicit that when a pharaoh ant colony is threatened, the ants bud off to form new satellite colonies elsewhere in the structure. Spraying turns one infestation into several, in places you have not found.
That needs a baiting programme rather than a standard treatment. Tell us what you are seeing — our identification guide covers how to tell them apart.
The Service
Ant control in Cambridge is £240 fixed price and guaranteed, with no call-out fee and the price confirmed before anything is booked. See the Ant Control Cambridge page for the full service, or the cost guide for what the figure covers.
Ant Control Cambridge — £240
fixed price
, guaranteed, with no call-out fee.
See the full service →
How to Get Rid of Ants — Common Questions
What is the single most effective thing I can do myself?
Find what they are feeding on and remove it — after any treatment has finished working. It is usually smaller than people expect: a toaster crumb tray, a spill under a unit, a pet bowl, an unrinsed jar in the recycling.
Do ant powders and sprays work?
They kill the ants they touch. They do not reach the queen or the brood, so an established colony replaces its foragers within days. They can also make a professional treatment harder by leaving a repellent residue.
Does boiling water down the nest work?
Rarely. It kills what it reaches near the surface and the colony continues below. On a patio it also washes the jointing sand out.
What about home remedies — vinegar, lemon, chalk, cinnamon?
Some of them disrupt a pheromone trail temporarily, which is why they look like they work for a day. The colony reroutes. None of them affects the nest.
How long does professional treatment take to work?
You will normally see activity drop away over the days after treatment as it is carried through the colony. We give you a specific period, and the treatment is guaranteed.
Should I clean the trails away?
Not while a treatment is working — the trail is the delivery route. Clean thoroughly once activity has stopped.
Get a Quote for Ant Control
Tell us what you have found and where. We confirm the treatment and the price before anything is booked.
More Ant Control Advice
Ant Identification Cambridge: What Type of Ants Are in My Home?
Almost always the black garden ant. But there is one species where getting it wrong and reaching for a spray turns a single problem into several.
Read the guide →Why Do Ants Keep Coming Back?
Ants returning is not usually bad luck. It is one of five things, and four of them are fixable in an afternoon.
Read the guide →How Much Does Ant Control Cost in Cambridge?
£240 Fixed Price
What the price covers, what changes it, and what happens on the day.
Read the price guide →Ant Control Across Cambridgeshire
We cover Cambridge and the surrounding towns. The main Ant Control Cambridge page covers the service in full.
Need Ant Control in Cambridge?
Tell us what you have seen and where, and we will give you the treatment and the price before we book anything.